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President Barack Obama arrives at Southwest Florida International Airport in Ft. Myers, Fla., Friday, July 20, 2012. Obama is cutting short a Florida campaign swing following the deadly Colorado movie theater shooting. He called the shooting "horrific". (AP Photo/Susan Walsh)

President Barack Obama arrives at Southwest Florida International Airport in Ft. Myers, Fla., Friday, July 20, 2012. Obama is cutting short a Florida campaign swing following the deadly Colorado movie theater shooting. He called the shooting "horrific". (AP Photo/Susan Walsh)